Dr. Thomas McElroy, Senior Research Scientist, Environment Canada


Tom McElroy is very active in Canada and internationally on issues related to ozone. He is a co-inventor of the Brewer Ozone Spectrophotometer in use in 41 countries world-wide and is the designer of the 'double Brewer', the most accurate ozone measuring instrument in the Global Ozone Observing System.

McElroy designed the Sun-Photometer flown on the Space Shuttle Challenger with Astronaut Marc Garneau in 1984 and the SunPhotoSpectrometer flown on the Shuttle with Steve MacLean in 1992.

He is a co-inventor of the UV Index in use internationally to tell the public about the hazards of ultraviolet radiation exposure. McElroy made NO2 measurements from the prototype Concorde #002 in 1973, well before the aircraft was certified, in support of the Climatic Impact Assessment Program.


You Asked Us: I remember when the disappearing ozone layer was all anyone could talk about. What have we done to help it recover? What is the current status of the ozone layer? (Environment Canada)

Scientist hits both poles to measure ozone depletion (Canada.com)